The invention discloses a preparation method of
olive oil essence, which comprises the steps of collecting an olive kernel, performing low-temperature
drying on the olive kernel, adding
sodium bicarbonate, performing water soaking, performing ultrasonic treatment, soaking the olive kernel in a
green tea concentrated solution, performing filtering, performing the low-temperature
drying on the olive kernel, performing high-pressure treatment on the olive kernel in a high-pressure kettle, performing cold pressing by a
hydraulic press after the pressure is instantly reduced to the normal pressure to obtain coarse
olive oil, performing
carbon dioxide supercritical extraction to obtain
olive oil, and mixing the olive oil,
glycerol,
snail slime,
hyaluronic acid, collagen
powder and
hyaluronic acid to obtain the olive oil essence. According to the method,
moisture in an olive kernel
cell is effectively removed to achieve oil-water separation, and the
green tea concentrated solution contains a rich
antioxidant substance and can effectively protect a
nutrient substance in the olive kernel, so that a
nutrient component in the olive kernel can be effectively extracted as a main component of the olive oil essence.